CVE-2005-3900

CVE-2005-3900 is a high-severity vulnerability with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Macromedia Breeze Communication Server and Breeze Live Server does 5.1 and earlier not sufficiently validate certain RTMP data, which allows attackers to cause a denial of service (instability or crash), as demonstrated using an alpha release build of Flash Player 8.5 (build 133).

Frequently asked questions

What is CVE-2005-3900?
Macromedia Breeze Communication Server and Breeze Live Server does 5.1 and earlier not sufficiently validate certain RTMP data, which allows attackers to cause a denial of service (instability or crash), as demonstrated using an alpha release build of Flash Player 8.5 (build 133).
How severe is CVE-2005-3900?
CVE-2005-3900 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2005-3900 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2005-3900?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2005-3900 published?
CVE-2005-3900 was published on 2005-11-29 and last updated on 2026-06-16.

References